I have a Bugera Veyron with a hybrid preamp. It comes from the factory with 12ax7a tubes. I put some 12ax7wa on it and messed it up. I put the factory tubes back on and it sounds low and somewhat distorted.

DO YOU KNOW OF A TECHNICIAN THAT CAN FIX IT?

Just bought this.. During rehearsal my bugera veyron had sound cut out multiple times, did some troubleshooting between cables and instruments and could not find the problem. I noticed the problem would go away immediately if I jiggled the cable, which leads me to believe it may be the input jack. Other than that, the internal components seem fine. What could be causing this? 

How can I fix this?

I've owned by Veyron since 2017 and up until last night it's been amazing.  I fired up the amp to start practicing for church this coming weekend and there was no sound output.  Checked with 2 basses, multiple instrument cables, headphones there's zero output from the instrument.  Successfully tested output from the FX Return so the cables/basses are all good so it's either something with the instrument jack itself or something in the preamp?  It's so strange as for the last year the amp hasn't left my house or even moved.  Has anyone had this experience and were you able to resolve it?

I have the pre-amp tube model and I need to understand how to use the Gain, Volume nand Master come into play to to set the overload light.

I've read on Talkbass, that one should set the Volume all the way down and then set the light using set the Gain. I've tried many combinations and have failed. To me, for the master , it should not matter where that control is. 

Is there a schematic to undertsand the signal order, that would help

Thanks for any help!

Hey guys, I just got to try a friend's Veyron Mosfet head with the 210 cabinet and I'm enamored. Why can't I find these cabinets anywhere? I want the same setup, amp and cabinet. Seems I may be able to find the head, but I'd want the cabinet too.